* Copyright (c) 2004-2007 Marcus Overhagen <marcus@overhagen.de>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <KernelExport.h>
#include "dtt7592.h"
#include "config.h"
#define TRACE_DTT7592
#ifdef TRACE_DTT7592
#define TRACE dprintf
#else
#define TRACE(a...)
#endif
status_t
dtt7592_write(i2c_bus *bus, const uint8 data[4])
{
status_t res;
TRACE("dtt7592_write values 0x%02x 0x%02x 0x%02x 0x%02x\n", data[0], data[1], data[2], data[3]);
res = i2c_write(bus, I2C_ADDR_PLL, data, 4);
if (res != B_OK)
TRACE("dtt7592_write error, values 0x%02x 0x%02x 0x%02x 0x%02x\n", data[0], data[1], data[2], data[3]);
return res;
}
status_t
dtt7592_read(i2c_bus *bus, uint8 *data)
{
status_t res;
res = i2c_read(bus, I2C_ADDR_PLL, data, 1);
if (res != B_OK)
TRACE("dtt7592_read error\n");
return res;
}
status_t
dtt7592_set_frequency(i2c_bus *bus, uint32 frequency, dvb_bandwidth_t bandwidth)
{
status_t res;
uint32 divider;
uint8 data[4];
divider = (frequency + 36083333) / 166666;
if (divider > 0x7fff)
divider = 0x7fff;
TRACE("dtt7592_set_frequency frequency %" B_PRId32 ", divider 0x%"
B_PRIx32 " (%" B_PRId32 ")\n", frequency, divider, divider);
data[0] = divider >> 8;
data[1] = (uint8)divider;
if (frequency > 835000000)
data[2] = 0xfc;
else if (frequency > 735000000)
data[2] = 0xf4;
else if (frequency > 465000000)
data[2] = 0xbc;
else if (frequency > 445000000)
data[2] = 0xfc;
else if (frequency > 405000000)
data[2] = 0xf4;
else if (frequency > 305000000)
data[2] = 0xbc;
else
data[2] = 0xb4;
if (frequency > 429000000)
data[3] = 0x08;
else
data[3] = 0x02;
if (bandwidth == DVB_BANDWIDTH_5_MHZ
|| bandwidth == DVB_BANDWIDTH_6_MHZ
|| bandwidth == DVB_BANDWIDTH_7_MHZ) {
data[3] |= 0x10;
}
res = dtt7592_write(bus, data);
if (res != B_OK) {
dprintf("dtt7592_set_frequency step 1 failed\n");
return res;
}
data[2] = (data[2] & 0x40) | 0x9c;
data[3] = 0xa0;
res = dtt7592_write(bus, data);
if (res != B_OK) {
dprintf("dtt7592_set_frequency step 2 failed\n");
return res;
}
snooze(100000);
data[3] = 0x20;
res = dtt7592_write(bus, data);
if (res != B_OK) {
dprintf("dtt7592_set_frequency step 3 failed\n");
return res;
}
return B_OK;
}
#if 0
void
dtt7582_dump(i2c_bus *bus)
{
uint8 data;
if (B_OK != dtt7592_read(bus, &data)) {
TRACE("dtt7582_dump failed\n");
}
TRACE("dtt7582_dump: 0x%02x, PLL %s, AGC %s\n", data, (data & 0x40) ? "locked" : "open", (data & 0x08) ? "active" : "off");
}
void
dtt7582_test(i2c_bus *bus)
{
TRACE("dtt7582_test start\n");
dtt7582_dump(bus);
TRACE("dtt7582_test freq 1\n");
dtt7592_set_frequency(bus, 150000000, DVB_BANDWIDTH_7_MHZ);
dtt7582_dump(bus);
TRACE("dtt7582_test freq 2\n");
dtt7592_set_frequency(bus, 746000000, DVB_BANDWIDTH_8_MHZ);
dtt7582_dump(bus);
TRACE("dtt7582_test freq 3\n");
dtt7592_set_frequency(bus, 538000000, DVB_BANDWIDTH_7_MHZ);
dtt7582_dump(bus);
TRACE("dtt7582_test freq 4\n");
dtt7592_set_frequency(bus, 896000000, DVB_BANDWIDTH_8_MHZ);
dtt7582_dump(bus);
TRACE("dtt7582_test freq 5\n");
dtt7592_set_frequency(bus, 333000000, DVB_BANDWIDTH_7_MHZ);
dtt7582_dump(bus);
}
#endif
